Net Dollar Retention (NDR) Calculator
Net Dollar Retention (NDR) — also called Net Revenue Retention (NRR) — tells you whether your existing customer base alone is growing or shrinking. Above 100% means happy customers expand faster than unhappy ones churn. Above 120% puts you in best-in-class SaaS territory.
| Starting ARR (cohort) | — |
| + Expansion | — |
| – Contraction | — |
| – Churn | — |
| Ending ARR | — |
| Net Dollar Retention | — |
Net Dollar Retention (NDR), also called Net Revenue Retention (NRR), measures whether a SaaS company's existing customer cohort grows or shrinks over 12 months — excluding new logos entirely. NDR above 100% means expansion outpaces contraction and churn; above 120% earns top-decile public SaaS multiples.
NDR Formula
NDR = (Starting ARR + Expansion – Contraction – Churn) ÷ Starting ARR. Note: NEW logo revenue is excluded — NDR measures only the existing customer cohort's evolution.
Top-Decile NDR Benchmarks
Per Bessemer's State of the Cloud 2024: median public SaaS NDR fell to 110% in 2024 from 120% in 2021. Top-decile companies (Snowflake, Datadog, MongoDB historically) sustained 130%+ for multiple years.
How to Improve NDR
Seat-based or usage-based pricing models structurally drive higher NDR than flat per-customer pricing. Multi-product attach (selling a second product to existing customers) is the highest-ROI growth lever once core retention is solid. Customer success investment correlates with reduced gross churn but not directly with expansion.
Last updated May 2026. Sources: Bessemer State of the Cloud 2024, OpenView SaaS Benchmarks.